根据颜色数量获取最大数量

Question

I have an array that looks like the following (I did a json_encode so it's easier to read on StackOverflow). I'm trying to get the highest color count based on number of colors. So for example single colors like Red has a count of 32 and White has a count of 31. Then I'd like to get the highest value which would be 32. And for dual colors I'd like to get back 4 since [White, Black] has the highest count among the dual colors. And for tri colors I'd like to get back 8 since they are all equal, etc.

[{
        "colors" : "",
        "count" : 55
    }, {
        "colors" : "[\"Red\"]",
        "count" : 32
    }, {
        "colors" : "[\"Green\"]",
        "count" : 32
    }, {
        "colors" : "[\"Blue\"]",
        "count" : 32
    }, {
        "colors" : "[\"White\"]",
        "count" : 31
    }, {
        "colors" : "[\"Black\"]",
        "count" : 31
    }, {
        "colors" : "[\"White\",\"Black\",\"Red\"]",
        "count" : 8
    }, {
        "colors" : "[\"Blue\",\"Red\",\"Green\"]",
        "count" : 8
    }, {
        "colors" : "[\"White\",\"Blue\",\"Red\"]",
        "count" : 8
    }, {
        "colors" : "[\"Blue\",\"Black\",\"Green\"]",
        "count" : 8
    }, {
        "colors" : "[\"White\",\"Black\",\"Green\"]",
        "count" : 8
    }, {
        "colors" : "[\"White\",\"Black\"]",
        "count" : 4
    }, {
        "colors" : "[\"Black\",\"Green\"]",
        "count" : 3
    }, {
        "colors" : "[\"White\",\"Red\"]",
        "count" : 3
    }, {
        "colors" : "[\"Blue\",\"Green\"]",
        "count" : 3
    }, {
        "colors" : "[\"Blue\",\"Red\"]",
        "count" : 3
    }
]

I'd like to retrieve these values in an array. The result would look like this:

$max_color_count = array(55, 32, 4, 8);

The 55 is from the one which has 0 colors, the 32 is from the single colors, the 4 is from dual colors, and the 8 is from tri colors.

Answer 1

This works with array.

$max_color_count = array(0, 0, 0, 0);
foreach($data as $k => $v)
{
  $colors_amount = count($v['colors']);
  $max_color_count[$colors_amount] = max($max_color_count[$colors_amount], $v['count']);
}
print_r($max_color_count);

This works with $data = json_decode("JSON_YOU_HAVE_GIVEN");

$max_color_count = array(0, 0, 0, 0);
foreach($data as $k => $v) 
{
    $colors_amount = count(json_decode($v->colors));
    $max_color_count[$colors_amount] = max($max_color_count[$colors_amount], $v->count);
}
print_r($max_color_count);